Book Image

Cross-Platform Development with Qt 6 and Modern C++

By : Nibedit Dey
Book Image

Cross-Platform Development with Qt 6 and Modern C++

By: Nibedit Dey

Overview of this book

Qt is a cross-platform application development framework widely used for developing applications that can run on a wide range of hardware platforms with little to no change in the underlying codebase. If you have basic knowledge of C++ and want to build desktop or mobile applications with a modern graphical user interface (GUI), Qt is the right choice for you. Cross-Platform Development with Qt 6 and Modern C++ helps you understand why Qt is one of the favorite GUI frameworks adopted by industries worldwide, covering the essentials of programming GUI apps across a multitude of platforms using the standard C++17 and Qt 6 features. Starting with the fundamentals of the Qt framework, including the features offered by Qt Creator, this practical guide will show you how to create classic user interfaces using Qt Widgets and touch-friendly user interfaces using Qt Quick. As you advance, you'll explore the Qt Creator IDE for developing applications for multiple desktops as well as for embedded and mobile platforms. You will also learn advanced concepts about signals and slots. Finally, the book takes you through debugging and testing your app with Qt Creator IDE. By the end of this book, you'll be able to build cross-platform applications with a modern GUI along with the speed and power of native apps.
Table of Contents (17 chapters)
Section 1: The Basics
Section 2: Cross-Platform Development
Section 3: Advanced Programming, Debugging, and Deployment

Chapter 8: Graphics and Animations

In this chapter, you will learn the fundamentals of Qt's graphics framework and how to render graphics on a screen. You will understand how general drawing is done in Qt. We will begin by discussing 2D graphics using QPainter. We will explore how to draw different shapes using a painter. Then you will learn about the Graphics View architecture used by QGraphicsView and QGraphicsScene. Later, we will discuss the Scene Graph mechanism used by Qt Quick. In this chapter, you will also learn how to make the user interface more interesting by adding animations and states.

In this chapter, we will discuss the following:

  • Understanding Qt's graphics framework
  • QPainter and 2D graphics
  • The Graphics View framework
  • OpenGL implementation
  • Qt Quick scene graph
  • Animation in QML
  • State machines in Qt

By the end of this chapter, you will understand the graphics framework used by Qt. You will be able to draw onscreen...